18684921

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{3557}}^1$

素因数の和:3680

約数の個数: 16

約数和(自身を含む): 26642304

約数和(自身を除く): 7957383

約数列:

[1, 3, 17, 51, 103, 309, 1751, 3557, 5253, 10671, 60469, 181407, 366371, 1099113, 6228307, 18684921]

約数ペア:

[(1, 18684921), (3, 6228307), (17, 1099113), (51, 366371), (103, 181407), (309, 60469), (1751, 10671), (3557, 5253)]